<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>行内块中间有缝隙</title>纵标浮横
    <style>
      div {
          /* float 浮动 */
          float:left;
          width: 150px;
          height: 200px;
          background-color: pink;
          /* display: inline-block; */

      }
    </style>
</head>
<body>
  <div>1</div>
  <div>2</div>
  <div>3</div>
  
</body>
</html>